Surface and center temperature of the mushroom, ambient humidity and temperature of vacuum chamber have been measured and recorded by the data logger inside the vacuum chamber (see Fig. 1). On the other hand, the control unit that records the pressure data is located outside the vacuum chamber (see Fig. 1). The measured data saved for each 10 seconds. Before starting the cooling, vacuum pump runs half an hour for stabilizing the system. Experiments carried out for three replicates and the…
to a cold object, the cold object will become warmer and the hot object will be cooler until a thermal equilibrium is reached. However, heat will still be lost to the surroundings. It is common knowledge that heat, of its own volition, does not transfer from a cold medium to a warmer medium. It is therefore impossible to construct a refrigerator that operates without an input of work. So for a refrigerator to work it requires an input of energy, Win. (From text…
Previous experimental results shows that the brine depth have the inverse relation with yield production [5-7]. The variation in the convective heat transfer coefficient and thermal coefficient of solar stills were studied by Tiwari and Tripathi [8, 9], where the Brine depth was chosen as major parameter that affects the still performance. As brine depth increases, the volumetric heat capacity of the still…
Abstract The purpose of this experiment is to determine the relationship between the temperature and pressure of air at constant volume which placed the Jolly’s bulb in water of different temperature. At the constant volume of the air in the Jolly’s bulb, the temperature and pressure of the air are measured and recorded throughout the experiment. The result shows that the pressure of the air in the Jolly’s bulb increases as the temperature rises, and the pressure decreases as the temperature…
When the weather turns chilly, people look for extra layers to get warm. The layer approach is useful for providing extra warmth and make your life comfortable and easy in winter. There is a solution for getting warm if you do not need extra layers. The duvets can help you get warm with just one layer. The duvet is just one layer and it acts like a comforter. The duvets are designed to take the place of several layers. The warmth of the duvet depends upon the filling and construction of the…
to the government transfer payment part, it is not included in the calculation of GDP. Government transfer payment is not in order to obtain current produced goods and services as a compensation of expenditure, including aspects of the government in social welfare payment, social insurance, unemployment program, poverty assistance, old age security, health care, spending on agricultural subsidies, etc. Government transfer payment is government through its functions to transfer and…
How Does Temperature (thermal kinetic energy) Affect the Phases of Matter? Observation Can matter be in anything that elements can mix to something different? Why does matter have to have more than 2 elements? What things do not have matter? Why does matter have to have more of, weight, volume or density? Why is there such things called matter? Why is the earth made of matter? How much does matter influence the earth and what it does to help? What is matter? How does…
By utilizing heat transfer from the hot combustion gases we can determine temperature distribution in the nozzle. If the temperature distribution and heat flux which are time dependent are given on the surface of wall we can find internal temperature distribution. This problem can be classified as direct heat problem. However many heat transfer problems which occur in practical take transient measurements at more than one location to find heat flux and temperature distribution on the wall. This…
Thermal comfort is maybe the most important and easily defined parameter of indoor environmental quality. It is largely responsible for the occupants discomfort and well being and users require a thermally comfortable environment in order to identify that a building is performing well. Thermal comfort studies declare that thermal sensation responses to a given motivation and depends upon the occupants state of thermal adaptation which correlated also on geographic location and climate, time of…
The extension may cause thermal discomfort especially to the room adjacent to road. Heat generates from tarmac being transfer into the room by convection process. It will contribute to accumulation of hot air inside the house. Construction of solid high wall-fences around the house to provide privacy and security but it forbids exchange of air. Concrete or cemented floor…